We report the discovery of a low surface brightness ( LSB ) object serendipitously found during deep CCD imaging of a compact group of galaxies , Seyfert ’ s Sextet , in V R and I bands .
The LSB object is located 2 \farcm 3 southwest from the group center .
Its surface brightness within the angular effective radii of r _ { e } ( V R ) = 4 \farcs 8 and r _ { e } ( I ) = 4 \farcs 8 is very low – \mu _ { e } ( V R ) = 25.28 mag arcsec ^ { -2 } and \mu _ { e } ( I ) = 24.47 mag arcsec ^ { -2 } , respectively .
The apparent magnitudes are m _ { AB } ( V R ) = 19.87 mag and m ( I ) = 19.06 mag .
The object is most likely a LSB dwarf galaxy , but other possibilities are also discussed .